What is CVE-2026-6298?

CVE-2026-6298 is a medium-severity vulnerability in Apple macOS, classified under Heap-based Buffer Overflow. CVSS score: 4.3/10. Published 2026-04-15.

How severe is CVE-2026-6298?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Buffer overflow in Apple macOS

CVE-2026-6298

Heap buffer overflow in Skia in Google Chrome prior to 147.0.7727.101 allowed a remote attacker to obtain potentially sensitive information from process memory via a crafted HTML page. (Chromium security severity: Critical)

Vulnerability class: Buffer Overflow

Published 2026-04-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (18.4th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 18th percentile — 18.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: -0.000

Affected products

Weakness classification (CWE)

CWE-122 — Heap-based Buffer Overflow

References

chromereleases.googleblog.com/2026/04/stable-channel-update-for-desktop_15.html (Release Notes, Vendor Advisory)
issues.chromium.org/issues/495700484 (Permissions Required)

Frequently asked questions

What is CVE-2026-6298?: CVE-2026-6298 is a medium-severity vulnerability in Apple macOS, classified under Heap-based Buffer Overflow. CVSS score: 4.3/10. Published 2026-04-15.
How severe is CVE-2026-6298?: Medium severity. CVSS v3 base score is 4.3 out of 10.